WATERS/OCEANS

Water is everywhere, but only a litle piece of it is directly usable.
Only a small fraction of water is fresh and most of that is locked up
in icecaps. Of the tiny fraction that is usable only three percent
occurs in the atmosphere, rivers, lakes and the rest is held
underground. Even so, the "usable hydrosphere" contains more water
than we will likely need for years. The problem is that water is so
unevenly distributed. Many people are Fighting floods while other
people are going thirsty.